No, i didnt purchase this and in case i did by mistake, isnt goldpassword needed for any fg purchase ??

Of course i have not typed my 10+ digit fg password by mistake lol

Can some1 explain ?? should i think some1 hacked my acc or wtf ??

It's really easy to accidently purchase a friend slot....you do use a gold pw everytime you send gold? Maybe it does not count for purchases like that? No clue man...you must of done that on accident though...

same thing happend to me like 2 years ago.
there is nothing to do. u paid 4 the friend slot and now u own an extra slot =/